Carbon particles from polluted air penetrate even in the placenta

SL, Среда 19 Сентябрь 2018 - 17:30:02

The idea that polluted air can harm the developing fetus in the womb, is not in dispute. More recently, however, scientists from Britain first discovered in the placenta of the smallest carbon particles, usually generated by burning fossil fuels. Experts received evidence that the particles of polluted air ways to reach even the placenta.

Previous studies have shown an Association between exposure to air pollution on pregnant women and premature birth, low-birth-weight baby at birth, infant mortality and children's respiratory problems.

New research complements existing data about the dangers of polluted air for unborn babies. Experts suggest if a pregnant woman breathes polluted air, soot particles can get into the placenta through the bloodstream.

"We already know that air pollution affects fetal development and can continue to influence children after birth and throughout life. We were interested to see if these effects can be caused by the movement of particles of pollution from the lungs of the mother in the placenta," says one of the study's authors Dr. Lisa Miyashita (Lisa Miyashita), University of London, Queen Mary. She noted that until now there was very little evidence that inhaled particles into the blood from the lungs.

Researchers have studied the placenta of the five non-Smoking women who have recently given birth healthy babies by caesarean section. Experts wanted to find out, do the particles of soot can penetrate the human lungs into the bloodstream and then into the placenta. To this end, they were looking for a certain type of immune cells called placental macrophages.

Recall that macrophages exist in different parts of the body. They are, as mentioned above, are part of the immune system. Macrophages have many functions, one of which is to absorb dangerous foreign particles (contaminants, for example). In the placenta they also help protect the fetus.

Previously, scientists have developed a technique using a powerful microscope to determine the polluting particles composed of carbon, inside the macrophages found in the lungs.

When the researchers used the same technique in the analysis of 3500 placental macrophages collected from five women, they found 72 tiny black region in 60 of them. According to the authors, black areas are carbon particles. Each placenta had an average of about five square micrometers particles of black substance.

Researchers continued to study placental macrophages of the two placentas with the aid of powerful electronic microscope. They again found a material which, in their opinion, consisted of tiny particles of carbon.

"Our results provide the first evidence that inhaled particles of environmental pollution can penetrate from the lungs into the bloodstream and then get into the placenta," says another study author BJ Norris (Norrice Liu) from the University of London Queen Mary.

As Liu says, the authors don't know whether the discovered particles to move in the fruit itself or not.

"However, our evidence suggests that this is indeed possible," — concludes the scientist.

To date, the study has not yet been formally peer-reviewed and published in a scientific journal. The team's results were presented at the international Congress of the European respiratory society.

Previously, the authors of the project "Conduct.Science" ( talked about the other dangerous effects of polluted air: in particular, it may impair the ability to math and language to disrupt the menstrual cycle.

In addition, researchers are also looking for ways to minimize the risk of impact of atmospheric pollution on our health. So, it was found that b vitamins can protect people from polluted air.

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